<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域  -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区 -->
      <!-- :model数据绑定 -->
      <!-- ref能够拿到实例对象 -->
      <el-form
        ref="loginFormRef"
        :model="loginform"
        :rules="loginFormRules"
        label-width="0px"
        class="login_form"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            v-model="loginform.username"
            prefix-icon="el-icon-user"
          ></el-input>
        </el-form-item>
        <!-- 密码  -->
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginform.password"
            prefix-icon="el-icon-lock"
          ></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginFrom">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginform: {
        username: 'admin',
        password: '123456',
      },
      //这是表单的验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  }, 
  methods: {
    // 点击重置按钮，重置登录表单
    resetLoginFrom() {
      //打印当前登录组件的实例对象
      // console.log(this);
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      //表单的预验证
      this.$refs.loginFormRef.validate(async (valid) => {
        // console.log(valid);
        if (!valid) return
        // data中的真实服务器的数据
        // const { data : res } = await this.$http.post('login', this.loginform);
        const { data: res } = await this.$http.post('test', this.loginform)

        // console.log(res);
        if (res.meta.status !== 200) return this.$message.error('登录失败!')
        this.$message.success('登录成功')

        window.sessionStorage.setItem('token', res.data.token)

        this.$router.push('/home')
      })
    },
  },
}
</script>


// scoped是局部生效，也就是说这个这个页面生效

<style lang='less' scoped>
.login_container {
  background: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  // box-sizing: border-box;怪异盒子是包括了内边距和边框的 box-sizing: content-box;标准盒子 不包括内边距padding和border
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>